The reaction shown below is endothermic.
NH4NO3 (s) NH4 + (aq) + NO3 − (aq)
a) Add energy (heat) to the above reaction as either a product or a reactant.
b) If the system shown above is cooled down, would the equilibrium shift to the right or to the left? Why?
c) Suppose you increase the concentration of NH4 + (aq). Would the equilibrium shift to the right or to the left? Why?
Answers
a) To represent the addition of heat as a reactant, we can write:
NH₄NO₃ (s) + heat ⟶ NH₄⁺ (aq) + NO₃⁻ (aq)
b) If the system is cooled down, the equilibrium will shift to the left.
c) Increasing the concentration of NH₄⁺ (aq) would shift the equilibrium to the left.
What happens in endothermic reaction?a) In an endothermic reaction, heat is absorbed. Therefore, to represent the addition of heat as a reactant, we can write:
NH₄NO₃ (s) + heat ⟶ NH₄⁺ (aq) + NO₃⁻ (aq)
b) If the system is cooled down, the equilibrium will shift to the left. This is because cooling down the system removes heat, and according to Le Chatelier's principle, the system will try to counteract the decrease in temperature by favoring the exothermic direction, which is the reverse reaction. In this case, the reverse reaction is the leftward shift, which represents the formation of NH₄NO₃ (s) from NH₄⁺ (aq) and NO₃⁻ (aq).
c) Increasing the concentration of NH₄⁺ (aq) would shift the equilibrium to the left. According to Le Chatelier's principle, if the concentration of a reactant is increased, the system will try to counteract the change by favoring the forward reaction. In this case, the forward reaction is the rightward shift, which represents the dissociation of NH₄NO₃ (s) into NH₄⁺ (aq) and NO₃⁻ (aq).
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Related Questions
What element has 16 electrons, 16 protons, and 16 neutrons
Answers
Answer:
The element that has 16 electrons, 16 protons, and 16 neutrons is sulfur (S)
Explanation:
The atomic number tell you the number of protons.
The atomic configuration tell you the number of electrons.
The mass number minus the protons tell you the number of neutrons.
what is the water write example
Answers
Answer:
Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances.
Explanation:
Answer/Explanation:
Water is a colorless and tasteless liquid that makes up an organism or body of any sort.
The meaning of the (holy)water is the spirit that flows in each person that will keep their hearts satisfied. Jesus used this term when talking to a Samaritan at a well. Water is also the source of the living water that springs up into eternal life. When talking about this water, Jesus was referring to himself. For His water(blood) had not yet been poured out and it could not yet cleanse (those who believed in him would be gushing out with the living water).
1
For this question, choose THREE answers. Which of the following compounds would have a chemical
name that ends in "-ide"?
A Na₂S
B Al2(CO3)3
C CO2
DAIP
E Na₂SO4
Answers
The compounds that would end in "-ide" are;
1) Na₂S
2) CO2
3) AIP
What is the name of the compounds?We know that chemical compounds can be identified by the name of the compound. Also, the name of the compound reflects the kind of species that we have in the compound. The task that we have here is that we need to find out the three compounds that would have the ending "-ide" in their names.
We have to know that the names of chemical compounds are often chosen by the International Union of Pure and Applied Chemistry (IUPAC). These rules are revised from time to time and are thus updated in order to help us to identify compounds.
It is important to note that the compounds whose names are most likely to end in the term "-ide" would be the binary compounds that are composed of the metals and the non metals.
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what is the coordination number around the central metal atom in ammonium diaquabis(oxalato)nickelate(ii) ((nh₄)₂[ni(c₂o₄)₂(h₂o)₂])?
Answers
The coordination number around the central metal atom in ammonium diaquabis(oxalato)nickelate(II) is 6.
In the given compound, ammonium diaquabis(oxalato)nickelate(II), the nickel (Ni) ion is the central metal atom. The coordination number refers to the number of ligands (atoms or molecules) that are directly bonded to the central metal atom. In this case, there are two oxalate ligands (C₂O₄²⁻) and two water ligands (H₂O) bonded to the nickel ion, resulting in a coordination number of 6.
Each oxalate ligand contributes two oxygen atoms, and each water ligand contributes one oxygen atom, giving a total of six ligands surrounding the central nickel atom.
Therefore, in the compound ammonium diaquabis(oxalato)nickelate(II), the central metal atom has a coordination number of 6.
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What is the most common element in earths crust
a.iron
b.oxygen
c.carbon
d.aluminum
Answers
Answer:
B.
Explanation:
The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass.
the pressure of a 98.11 g sample of arsenic pentafluoride in a 5340 mL container is measured to be 1.36 atm. What is the temperature of this gas in kelvin?
Answers
PV = nRT
Where:
P = pressure (in atm)
V = volume (in liters)
n = number of moles of the gas
R = ideal gas constant (0.0821 L·atm/(mol·K))
T = temperature (in Kelvin)
First, we need to convert the given values to the appropriate units:
Mass of arsenic pentafluoride = 98.11 g
Volume of the container = 5340 mL = 5.34 L (since 1 L = 1000 mL)
Pressure = 1.36 atm
Next, we need to calculate the number of moles of arsenic pentafluoride:
Molar mass of AsF5 = 98.11 g/mol
Number of moles (n) = mass / molar mass = 98.11 g / 98.11 g/mol = 1 mol
Now we can rearrange the ideal gas law equation to solve for temperature:
T = (PV) / (nR)
Plugging in the values:
T = (1.36 atm * 5.34 L) / (1 mol * 0.0821 L·atm/(mol·K))
Simplifying:
T = 7.2544 atm·L / (0.0821 mol·K)
T = 88.473 K
Therefore, the temperature of the gas is 88.473 Kelvin.
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.
First, we need to find the number of moles of arsenic pentafluoride:
n = mass / molar mass
The molar mass of arsenic pentafluoride (AsF5) is:
(1 x atomic mass of As) + (5 x atomic mass of F) = (1 x 74.92 g/mol) + (5 x 18.99 g/mol) = 218.87 g/mol
So, the number of moles is:
n = 98.11 g / 218.87 g/mol = 0.447 mol
Now, we can rearrange the Ideal Gas Law to solve for temperature:
T = PV / nR
We need to make sure that all the units are in the correct SI units, so we convert the volume to liters:
V = 5340 mL = 5.34 L
We also need to use the correct value of the gas constant for the units we are using. We will use R = 0.0821 L·atm/mol·K.
Now we can substitute the values and solve for T:
T = (1.36 atm) x (5.34 L) / (0.447 mol) x (0.0821 L·atm/mol·K) = 369 K
Therefore, the temperature of the gas is 369 K.
What is the name of the barrier that must be overcome before products are formed in a spontaneous reaction?.
Answers
Barrier that must be overcome before products are formed in a spontaneous reaction is Activation energy barrier.
A spontaneous response is a response that favors the formation of products on the conditions underneath which the response is occurring. A roaring bonfire is an instance of a spontaneous response, in view that it is exothermic (there is a decrease inside the power of the system as energy is released to the environment as warmth).
Maximum spontaneous chemical reactions are exothermic - they release warmness and heat up their surroundings: for instance: burning wooden, fireworks, and alkali metals introduced to water. When a radioactive atom splits up, it releases strength: that is a spontaneous, exothermic nuclear reaction.
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What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
Answers
Answer:
The given chemical compound has 2 atoms of hydrogen and one atom of oxygen for each atom of carbon. The mass of CH2O is 12 + 2*1 + 16 = 30. The molecular weight of the compound is 180.18 which is approximately 180. This gives the molecular formula of the chemical compound as C6H12O6.
Why do we not just calibrate the gas thermometer at absolute zero? - Waiting for equilibrium at absolute zero would take much more time than is available - Measuring absolute zero requires liquid deuterium for coolant which is expensive - Absolute zero cannot practically be produced in any lab setting - Condensation of water vapor in the lab would raise the temperature
Answers
We do not just calibrate the gas thermometer at absolute zero because absolute zero cannot practically produced in o any lab setting.
Reason -
In order to cool a substance to absolute zero (-243-15°C), an unlimited amount of work would be required to remove the heat from it. Therefore, it is essentially impossible to create an environment with an absolute zero temperature.
Because absolute zero cannot effectively be manufactured in any lab setting, we cannot calibrate our thermometer at that temperature due to letter C. Since we cannot create absolute zero,
a thermodynamic system has its lowest energy at absolute zero degrees Celsius. It is equivalent to 459.67 degrees Fahrenheit and 273.15 degrees Celsius, respectively, on the thermometer.
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boyle's law states that: group of answer choices equal amounts of gases occupy the same volume at constant temperature and pressure. the volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature. the volume of a fixed amount of gas is directly proportional to its temperature in kelvin at constant pressure. the total pressure of a mixture of gases is the simple sum of the partial pressure of all of the gaseous compounds. the volume of a fixed amount of gas is proportional to its pressure at constant temperature.
Answers
Boyle's Law states that the volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature. This means that when the pressure of a gas increases, its volume decreases, and vice versa, as long as the temperature remains constant.
Boyle's Law states that the volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature. This means that if the pressure of a gas is increased while the temperature remains constant, the volume of the gas will decrease. Similarly, if the pressure is decreased, the volume will increase. This relationship can be expressed mathematically as PV = k, where P is pressure, V is volume, and k is a constant.
Boyle's Law only applies when the temperature is constant. If the temperature of a gas changes, its volume will also change according to another law called Charles's Law. Charles's Law states that the volume of a fixed amount of gas is directly proportional to its temperature in Kelvin at constant pressure. This means that if the temperature of a gas is increased, its volume will also increase proportionally.
Another important concept related to gases is Dalton's Law of Partial Pressures. This law states that the total pressure of a mixture of gases is the simple sum of the partial pressure of all of the gaseous compounds. This means that if there are multiple gases in a container, the pressure of each gas can be calculated independently based on its partial pressure.
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Tin and oxygen can combine to form two compounds of different combining proportions. Resulting formulas of these compounds include
a. Sn2O and SnO2 d. SnO and SnO3
b. SnO and SnO2 e. SnO2 and SnO4
c. SnO4 and SnO
???
Answers
Answer:
B.) SnO and SnO₂
Explanation:
Tin can either exist as Sn²⁺ or Sn⁴⁺ when ionized. Oxygen always exists as O²⁻ when ionized.
When ions combine, sometimes there needs to be different amounts of each ion in order to create an overall charge of 0. In one combination of the ions (Sn²⁺ and O²⁻), there only needs to be one atom of each ion. In another combination (Sn⁴⁺ and O²⁻), you need to have more anions to balance the high positive charge of the cation.
SnO
-----> Sn²⁺ and O²⁻
-----> +2 + (-2) = 0
SnO₂
-----> Sn⁴⁺ and O²⁻
-----> +4 + (-2) + (-2) = 0
Is nabro3 ionic or molecular?
Answers
NaBrO₃ (sodium bromate) is an ionic compound. It consists of a metal (sodium, Na) and a polyatomic ion (bromate, BrO₃⁻).
Ionic compounds are compounds composed of positive and negative ions held together by electrostatic forces. They are formed through the transfer of electrons between atoms, resulting in the formation of positively charged cations and negatively charged anions.
In an ionic compound, the cations are typically metal ions, while the anions are usually nonmetal ions or polyatomic ions. The transfer of electrons occurs from the metal atom(s) to the nonmetal atom(s), resulting in the formation of a crystal lattice structure.
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In addition to the name of the chemical, and all special warnings, what else must be on the label of all stock solutions prepared in the lab?
Answers
In addition to the name of the chemical and any special warnings, there are several other important pieces of information that should be included on the label of stock solutions prepared in the lab. These include:
1. Concentration: The concentration of the stock solution should be clearly indicated. This can be expressed as molarity (M), percentage (%), or other appropriate units.
2. Date of Preparation: It is important to include the date when the stock solution was prepared. This helps in tracking the age and shelf life of the solution.
3. Storage Conditions: The recommended storage conditions should be provided, such as temperature, light sensitivity, or any other specific requirements to maintain the stability and integrity of the solution.
4. Hazard Symbols or Codes: If the chemical is hazardous, it is important to include the appropriate hazard symbols or codes, such as GHS (Globally Harmonized System) pictograms, to indicate the potential risks associated with the solution.
5. Safety Precautions: Any necessary safety precautions or handling instructions should be clearly stated, including the use of personal protective equipment (PPE), ventilation requirements, and handling procedures.
6. Batch or Lot Number: If applicable, a batch or lot number can be included to help with traceability and quality control.
It is essential to ensure that all information on the label is accurate, up-to-date, and compliant with local regulations and safety standards. Properly labeled stock solutions help to minimize the risks associated with handling and using chemicals in the laboratory.
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How to find the final product of Fe (II) + CI ?
Answers
The valency of iron (Fe) in this equation is 2
While, the valency of chlorine is 1
Therefore, we know that iron wants to give away 2 electrons to attain octet configuration, and chlorine wants to get an electron to attain octet configuration.
Also while find the products the number of atoms is similar to the oppostie valency
Fe = 1 atom , Cl = 2 atoms
Which will form FeCl₂
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Nitrogen dioxide undergoes thermal decomposition according to the second-order reaction 2 NO2(g) 2 NO(g) + O2(g). When 0.500 M NO2 is allowed to react for 90.0 seconds, its concentration falls to 0.0196 M. What is the half-life of the reaction when [NO2]0 = 0.500 M?
Answers
Answer:
half-life is 3.67s
Explanation:
The general law of the second-order reaction is:
\(\frac{1}{[A]}=\frac{1}{[A]_0}+kt\)
As after 90.0s, the concentration of NO2 decreases from 0.500M to 0.0196M:
\(\frac{1}{[0.0196]}=\frac{1}{[0.500]}+k*90.0s\)
49.02M⁻¹ = K*90.0s
0.5447M⁻¹s⁻¹ = K
Now, half-life, t1/2 is:
\(t_{1/2}=\frac{1}{K[A]_0}\)
Half-life is:
t(1/2) = 1 / (0.5447M⁻¹s⁻¹*0.500M)
half-life is 3.67sPLEASE SOMEBODY EXPLAIN THIS :(((
Answers
Answer:
\( \boxed{ \sf \: R_f \: value \: of \: sample \: 1 =0.3142}\)
Explanation:In Analytical Chemistry chromatography is widely used for the separation of samples.
In thin layer chromatography, the mixture of components are separated on the basis of their polarity. The solvent solution(mobile phase) that we use are non polar & silica gel( TLC paper made of/stationary phase) are polar.Consider the mixture we have taken consist of two samples having large polar difference.Due to opposite nature of silica gel(polar) & solvent solution (non polar) the movement become easy & due to capillary action solvent solution rise to the top.The mixture of sample we have taken, the sample have less polarity have high peak or they travel more distance than that of more polar sample when they dipped into the solution.In the given diagram, mixture of 8 samples are separated on the basis of their polarity, the distance travelled by solvent is 35 mm, distance travelled by sample 1 is 11 mm & similarly distance travelled by sample 2,3,4,5,6,7 are 15,31,4,22,25,33 in mm respectively.
Rf Value: Rf value is retention factor which tells about relative absorption of each sample & range of Rf value is 0-1.
Formula to calculate Rf value is
\( \sf R_f \: value = \frac{distance \: moved \: by \: sample}{distance \: moved \: by \: solvent} \)
Now, solving for Rf value of sample 1
Given:
Distance moved by sample 1 = 11 mm
Distance movedby solvent = 35 mm
To find:
Rf value of sample 1 = ?
Solution:
Substituting the given data in above formula,
\( \small \sf R_f \: value = \frac{distance \: moved \: by \: sample \: 1}{distance \: moved \: by \: solvent} \\ \small \sf R_f \: value = \cancel\frac{11 \: mm}{35 \: mm} = 0.3142\)
\( \small \boxed{ \sf \: R_f \: value \: of \: sample \: 1 =0.3142}\)
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What is the mass percent (m/m) of glucose in a solution that contains 30.0 g of water and 5.8 g of glucose?
A) 16.2%
B) 19.3%
C) 14.4%
D) 5.8%
Answers
The mass percent (m/m) of glucose in a solution that contains 30.0 g of water and 5.8 g of glucose is 16.2%.
Thus, the correct option is A.
Mass percent is a term used to describe the concentration of a solution. It is defined as the mass of the solute in grams divided by the total mass of the solution in grams, multiplied by 100 percent.
To find the mass percent of glucose in the given solution, we need to calculate the total mass of the solution. The total mass of the solution is given by the sum of the mass of glucose and water:
30.0 g (water) + 5.8 g (glucose) = 35.8 g (total mass of solution)
The mass percent of glucose in the solution is then calculated as follows:
Mass percent (m/m) = (mass of glucose ÷ total mass of solution) × 100 percent
= (5.8 ÷ 35.8) × 100 percent= 16.2 percent
Therefore, the mass percent (m/m) of glucose in the solution is 16.2%.
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what determines electrical charge of polyatomic ions
Answers
Answer: Polyatomic ions each carry a specific charge, which is determined by their numbers of valence electrons.
when a protein is heated, which of the following will most likely be disrupted?
Answers
Answer:
Heating a protein will not change its primary structure, but may change its secondary, tertiary or quaternary structure.
Explanation:
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which substance does not have a definite shape, color, or texture?
Answers
I believe gases do not have a definite shape, color, or texture.
A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape
So the answer is a gas
What color of the spectrum contains the least amount of energy?
A. Red
B. Brown
C. Green
D. Violet
Answers
Answer:
red
Explanation:
15. The gerbils are prey for sharp-eyed hawks. How might the frequency of the black
fur and brown fur alleles change in the population after a fire blackens the area?
Will the frequencies vary proportionally (at the same rate)? Explain your answer.
Answers
The frequency of black fur and brown fur alleles in the gerbil population may change after a fire blackens the area due to the effects of natural selection. The frequencies vary proportionally (at the same rate) would not likely change.
Black-furred gerbils would have better camouflage in the charred environment, making them less visible to hawks, their predators. As a result, black-furred gerbils would have a higher survival rate, leading to an increase in the frequency of the black fur allele in the population. Conversely, brown-furred gerbils would be more conspicuous against the blackened backdrop, making them more vulnerable to predation. Consequently, the frequency of the brown fur allele may decrease as the number of brown-furred gerbils declines.
The frequencies of the black and brown fur alleles would not likely change at the same rate. This is because natural selection tends to act more on specific traits that provide a significant advantage or disadvantage in a given environment. In this scenario, the advantage of black fur for camouflage would lead to a more rapid increase in the frequency of the black fur allele, while the decrease in the brown fur allele frequency may be slower due to ongoing predation. Thus, the frequencies would not vary proportionally. So therefore in natural selection, the frequency of black fur and brown fur alleles in the gerbil population may change after a fire blackens the area and the frequencies vary proportionally (at the same rate) would not likely change.
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Convert 3.5x1025 molecules of Co, to
moles,
Answers
Answer:
Convert 3.5x1025 molecules of Co, to
moles,
Explanation:
Calculate deltag for a reaction taking place at 655k given that deltah = -158kj and deltas = -219.9 j/k
Answers
The value of Gibbs free energy is 143876.5 joules
Gibbs free energy.The maximum amount of work that can be accomplished by a thermodynamically closed system at constant temperature and pressure can be calculated using the Gibbs free energy (also known as Gibbs energy; symbol: Δ G). Additionally, it offers a prerequisite for any processes like chemical reactions that might take place in such circumstances.
The maximum amount of non-expansion work that can be taken from a closed system (one that may exchange heat and work with its surroundings but not matter) at fixed temperature and pressure is known as the Gibbs free energy change (ΔG =ΔH - TΔS), measured in joules in SI. This maximum is only possible with a fully reversible method. Under these circumstances, when a system changes reversibly from an initial state to a final state, the reduction in Gibbs free energy is equal to the work performed by the system on its surroundings less the work of the pressure forces.
ΔH=-158 kj = enthalpy change
T=655k = temperature
ΔS=-219.9 j/k = entropy
ΔG =ΔH - TΔS
=-158 -(655 x -219.9)
= -158 -(-144034.5)
=143876.5 joules
so, the value of Gibbs free energy is 143876.5 joules
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what is the electronic configuration of all the elements
Answers
Answer:
1 Hydrogen 1s1
2 Helium 1s2
3 Lithium [He]2s1
4 Beryllium [He]2s2
5 Boron [He]2s22p1
6 Carbon [He]2s22p2
7 Nitrogen [He]2s22p3
8 Oxygen [He]2s22p4
9 Fluorine [He]2s22p5
10 Neon [He]2s22p6
11 Sodium [Ne]3s1
12 Magnesium [Ne]3s2
13 Aluminum [Ne]3s23p1
14 Silicon [Ne]3s23p2
15 Phosphorus [Ne]3s23p3
16 Sulfur [Ne]3s23p4
17 Chlorine [Ne]3s23p5
18 Argon [Ne]3s23p6
19 Potassium [Ar]4s1
20 Calcium [Ar]4s2
21 Scandium [Ar]3d14s2
22 Titanium [Ar]3d24s2
23 Vanadium [Ar]3d34s2
24 Chromium [Ar]3d54s1
25 Manganese [Ar]3d54s2
26 Iron [Ar]3d64s2
27 Cobalt [Ar]3d74s2
28 Nickel [Ar]3d84s2
29 Copper [Ar]3d104s1
30 Zinc [Ar]3d104s2
31 Gallium [Ar]3d104s24p1
32 Germanium [Ar]3d104s24p2
33 Arsenic [Ar]3d104s24p3
34 Selenium [Ar]3d104s24p4
35 Bromine [Ar]3d104s24p5
36 Krypton [Ar]3d104s24p6
37 Rubidium [Kr]5s1
38 Strontium [Kr]5s2
39 Yttrium [Kr]4d15s2
40 Zirconium [Kr]4d25s2
41 Niobium [Kr]4d45s1
42 Molybdenum [Kr]4d55s1
43 Technetium [Kr]4d55s2
44 Ruthenium [Kr]4d75s1
45 Rhodium [Kr]4d85s1
46 Palladium [Kr]4d10
47 Silver [Kr]4d105s1
48 Cadmium [Kr]4d105s2
49 Indium [Kr]4d105s25p1
50 Tin [Kr]4d105s25p2
51 Antimony [Kr]4d105s25p3
52 Tellurium [Kr]4d105s25p4
53 Iodine [Kr]4d105s25p5
54 Xenon [Kr]4d105s25p6
55 Cesium [Xe]6s1
56 Barium [Xe]6s2
57 Lanthanum [Xe]5d16s2
58 Cerium [Xe]4f15d16s2
59 Praseodymium [Xe]4f36s2
60 Neodymium [Xe]4f46s2
61 Promethium [Xe]4f56s2
62 Samarium [Xe]4f66s2
63 Europium [Xe]4f76s2
64 Gadolinium [Xe]4f75d16s2
65 Terbium [Xe]4f96s2
66 Dysprosium [Xe]4f106s2
67 Holmium [Xe]4f116s2
68 Erbium [Xe]4f126s2
69 Thulium [Xe]4f136s2
70 Ytterbium [Xe]4f146s2
71 Lutetium [Xe]4f145d16s2
72 Hafnium [Xe]4f145d26s2
73 Tantalum [Xe]4f145d36s2
74 Tungsten [Xe]4f145d46s2
75 Rhenium [Xe]4f145d56s2
76 Osmium [Xe]4f145d66s2
77 Iridium [Xe]4f145d76s2
78 Platinum [Xe]4f145d96s1
79 Gold [Xe]4f145d106s1
80 Mercury [Xe]4f145d106s2
81 Thallium [Xe]4f145d106s26p1
82 Lead [Xe]4f145d106s26p2
83 Bismuth [Xe]4f145d106s26p3
84 Polonium [Xe]4f145d106s26p4
85 Astatine [Xe]4f145d106s26p5
86 Radon [Xe]4f145d106s26p6
87 Francium [Rn]7s1
88 Radium [Rn]7s2
89 Actinium [Rn]6d17s2
90 Thorium [Rn]6d27s2
91 Protactinium [Rn]5f26d17s2
92 Uranium [Rn]5f36d17s2
93 Neptunium [Rn]5f46d17s2
94 Plutonium [Rn]5f67s2
95 Americium [Rn]5f77s2
96 Curium [Rn]5f76d17s2
97 Berkelium [Rn]5f97s2
98 Californium [Rn]5f107s2
99 Einsteinium [Rn]5f117s2
100 Fermium [Rn]5f127s2
101 Mendelevium [Rn]5f137s2
102 Nobelium [Rn]5f147s2
103 Lawrencium [Rn]5f147s27p1
104 Rutherfordium [Rn]5f146d27s2
105 Dubnium *[Rn]5f146d37s2
106 Seaborgium *[Rn]5f146d47s2
107 Bohrium *[Rn]5f146d57s2
108 Hassium *[Rn]5f146d67s2
109 Meitnerium *[Rn]5f146d77s2
110 Darmstadtium *[Rn]5f146d97s1
111 Roentgenium *[Rn]5f146d107s1
112 Copernium *[Rn]5f146d107s2
113 Nihonium *[Rn]5f146d107s27p1
114 Flerovium *[Rn]5f146d107s27p2
115 Moscovium *[Rn]5f146d107s27p3
116 Livermorium *[Rn]5f146d107s27p4
117 Tennessine *[Rn]5f146d107s27p5
118 Oganesson *[Rn]5f146d107s27p6
Explanation:
HELP!!! I need "2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)" in word form
Answers
How many millimeters are there in 5.12 x 10^5
kilometers? (1000 millimeters = 1 meter, 1000
meters - 1 kilometer) (Use 3 sig figs in your answer.)
Answers
Answer:
5.12x10¹¹ millimeters
Explanation:
Milli is a prefix used in science and engineering to decribe the number as the exponent x10⁻³. In the prefix kilo, the number is at the exponent x10³.
5.12x10⁵ kilometers are:
5.12x10⁵ kilometers * (1000m / 1km) = 5.12x10⁸ meters
5.12x10² meters * (1m / 1000millimeters) = 5.12x10¹¹ millimeters
can someone help me solve the questions below using the data table below please
DATA TABLE:
Mass of flask and vinegar solution- 25.17g
Mass of flask- 15.12g
Volume of vinegar solution (in mL)- 10.00ml
Initial volume of NaOH (in mL)-0.00ml
Final volume of NaOH (in mL)-39.00ml
CALCULATIONS:
Mass of vinegar solution- 10.0503g
Volume of NaOH used in titration (in mL)-39.00ml
Answers
The percent by mass of acetic acid in the vinegar is 2.33%.
Below are the steps to solve the given problem using the data table given below:
Step 1: Calculate the mass of the vinegar. Given,Mass of flask and vinegar solution- 25.17gMass of flask- 15.12gMass of vinegar solution = Mass of flask and vinegar solution - Mass of flask= 25.17 g - 15.12 g= 10.05 g
Step 2: Calculate the moles of NaOH used in the titration.Molarity of NaOH solution is 0.1 M.Moles of NaOH = Molarity × Volume of NaOH usedMoles of NaOH = 0.1 M × 39.00 mL (since the initial volume of NaOH is 0.00 mL)Moles of NaOH = 0.0039 moles
Step 3: Determine the moles of acetic acid used in the reaction.The balanced chemical equation for the reaction between NaOH and acetic acid (the main component of vinegar) is given below:CH3COOH + NaOH → CH3COONa + H2OMoles of NaOH = Moles of CH3COOH (since they react in a 1:1 ratio)Moles of CH3COOH = 0.0039 moles
Step 4: Calculate the mass of acetic acid used in the reaction.Molar mass of acetic acid is 60.05 g/mol.Mass of CH3COOH = Moles of CH3COOH × Molar mass of CH3COOH= 0.0039 moles × 60.05 g/mol= 0.234 gStep 5: Calculate the percent by mass of acetic acid in the vinegar.Percent by mass of acetic acid = (Mass of CH3COOH / Mass of vinegar solution) × 100%= (0.234 g / 10.05 g) × 100%= 2.33%.
for such more questions on mass
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9. A helium-filled balloon has a volume of 50.0 L at 25°C and 820.8mmHg atm. What pressure will it have
when the volume is sixty liters at 10.0°C?
Answers
Answer:
b
Explanation:
What are The factor(s) which help in the prediction of trends in the periodic
table
Answers
Answer:
number of protons in the nucleus, number of energy levels, and the shielding effect.
Explanation:
I hope this helps :)